Wednesday, October 21, 2009

crazy currants by TS

question

where is the gas formed during the chemical reaction of vinegar and baking soda and how can we see this

Hypothesis

The gas is formed as bubbles inside the mixture

Equipment

baking soda , sultanas, container, vinegar, and measuring spoons

Method

The vinegar is poured into the container.
The baking soda is sprinkled in the container
The sultana are the added.

Observation

Bubbles formed when the baking soda and vinegar mixed.
The sultanas traveled to the top of vinegar and then down.This repeated until the bubbles disappeared

Explanation

The sultanas moved to the top because the bubbles of carbon dioxide formed under the sultanas and pushed them to the top. At the top the bubbles popped and released gas causing the sultanas to fall. This process repeated until there were no more bubbles this proves that gas is formed as bubbles inside the mixture

Crazy Currents by TC.

Question: Where is the gas formed during the chemical reaction of vinegar and baking soda and how we can see this.
Hypothesis: The gas is formed as bubbles inside the mixture.
Equipment: Baking Soda, Vinegar, Sultanas, Measuring Spoon and Containers.
Method:
1) The vinegar is poured into the container.
2) The sultanas are added.
3) The baking soda is sprinkled into the container.
Observation:
1) Bubbles are formed when the vinegar and baking soda is mixed.
2) The sultanas traveled to the top of the bubbles and then down.This is repeated until all the bubbles have diapered.
Explanation: The sultanas moved to the top because of Carbon Dioxide formed under the sultanas and then pushed to the top.At the top the bubbles popped and released gas causing the sultanas to fall.This process is repeated until there is no more bubbles.

This Proves:
The gas is formed as bubbles inside the mixture.P.S the the gas Carbon Dioxide, scientists call it CO2.

Crazy Currents, by V.S.

Question
Where is the gas formed and how can we see this during the chemical reaction of vinegar and baking soda?

Hypothesis
This gas is formed as bubbles inside the mixture.

Equipment
Baking soda
Vinegar
raisins/sultanas
measuring spoons
container

Method
1. The vinegar is poured into the container.
2. The baking soda is sprinkled in the vinegar.
3. The sultanas are added.

Observation
1. The bubbles formed when the baking soda and vinegar mixed.
2. The sultanas travelled to the top of the vinegar and then down. This repeated until the bubbles disappeared.

Explanation
The sultanas moved to the top because the bubbles of Co2 formed under the sultanas & pushed them to the top. At the top, the bubbles popped & released gas, causing the sultanas to fall. This process repeated until there were no more bubbles. This proves that when you mix baking soda and vinegar, the gas is formed as bubbles inside the mixture.